Sherman wrote:

"Charlie Tigh" wrote:

Our kitchen sink is the farthest distance from the water heater in the
garage and seems forever to get hot water. I'm going to do something to
improve the situation not only for conservation but also our convenience...

No you're not!

You are doing it strictly for convenience and not for conservation.

For conservation AND convenience, heavily insulate the pipe from
heater to faucet.

That won't help much with convenience, given the pipe's low thermal mass
and short time constant.

Nick